The Sigma 17-70mm F2.8-4 DC Macro OS HSM Lens is a large-aperture lens with a maximum f/stop of f/2.8 in wide angle setting. The large zoom range of this 4x zoom lens (equivalent range of approx. 27-112mm when used with a Nikon digital SLR camera with an APS-C size chip) makes it ideal as an everyday large-aperture lens. In addition, the minimum focus distance of 8.7" along with the maximum magnification of 1:2.7 also makes the lens perfect for close-up photography. ...

This compact high zoom ratio lens incorporates Sigma's original OS (Optical Stabilizer) function. This system uses two sensors inside the lens to detect vertical andhorizontal movement of the camera and works by moving an optical image stabilizing lens group to effectively compensate for camera shake. It offers the use of shutter speeds approximately 4 stops slower. ...

If you have a Nikon camera with a smaller-size APS-C sensor and F mount, then the 18-250mm F3.5-6.3 DC Macro OS HSM from Sigma is an incredibly versatile lens that is a real jack-of-all-trades lens you can carry in any situation. With a focal length spanning from a wide-angle 18mm up to a 250 mm telephoto zoom, with macro capabilities to boot, Sigma's 18-250mm could easily be your camera's first all-in-one lens, or a great replacement for several smaller lenses that you're looking to consolidate....

The Sigma 50-150mm f/2.8 II EX DC HSM lens is a compact, lightweight, large aperture telephoto zoom lens designed exclusively for APS-C digital SLR cameras. The version II of this high-quality lens has been optimized with an even better optical design, which provides optimum lens performance providing excellent correction for flare, ghosting and all types of aberrations. ...

The Sigma 24-70mm f/2.8 IF EX DG HSM Lens is a large aperture standard zoom lens that covers a range from wide angle to short telephoto. It is ideal for general photography such as snapshots, portraiture and landscapes. When used on digital SLR cameras which use the APS-C (Nikon DX) sensor, this lens will provide a focal length equivalent to 36-105mm in 35mm terms.
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The Sigma 70-300mm 4-5.6 DG Macro Lens is the ideal compact and economical choice for a telephoto zoom lens. By incorporating an autofocusing motor into the lens itself, it can now autofocus with all Nikon DSLR cameras (including the D40, D40x, etc.). In addition, with the motor built into the lens, focusing will be quieter and more responsive. ...

Sigma's 70-300mm f/4-5.6 APO DG Macro Lens is one of several tele zoom lenses. By incorporating the autofocusing motor into the lens itself, it can now autofocus with all Nikon DSLR cameras (including the D40, D40x, etc.). In addition, with the motor built into the lens, focusing will be quieter and more responsive. ...

The Sigma 70-300mm f/4-5.6 DG OS Telephoto Zoom makes telephoto shooting easy for many types of photography such as sport and nature. The lens is built with Special Low Dispersion Glass (SLD) elements to provide corrections for all types of aberrations. Its super-multi-layer coating adds to the excellence of images by reducing flare and ghosting, yielding high contrast images throughout the focal range. ...

This Sigma 120-400mm f/4.5-5.6 DG OS HSM APO Lens is an ultra telephoto zoom lens ideal for nature/outdoor or sports photography. It has a minimum focusing distance of 59.1" (150cm) throughout the entire zoom range and has a maximum magnification of 1:4.2 making it useful for close-up photography. The OS (Optical Stabilizer) system minimizes image blur caused by camera shake, and offers the equivalent of shooting at a shutter speed 3-4 stops faster. ...

The Sigma 200-500mm f/2.8 EX DG APO IF Lens is a massive ultra-telephoto zoom lens that offers an impressive fast f/2.8 aperture throughout its entire zoom range, all the way up to 500mm. Combined with the included dedicated high-quality 2x teleconverter, this lens can be converted for use as a 400-1000mm f/5.6 lens. Now combine this with an APS-C sized digital SLR camera, and you're looking at approximately a 300-750mm f/2.8, or a 600-1500mm f/5.6 (with 2x teleconverter) lens. ...

The Sigma 300-800mm f/5.6 EX DG HSM is an extreme telephoto zoom lens, and ideal for nature/outdoor or sports photography. This lens provides a relatively large constant f/5.6 maximum aperture at all focal lengths. The use of Apochromatic design and 2 ELD (Extraordinary Low Dispersion) glass elements give full correction of chromatic aberration and provide a high level of optical performance. ...

The Sigma 1.4x DG EX APO Tele Converter (also known as a tele-extender) will multiply the focal length of the existing lens by 1.4x, and will cut back the amount of light by one f/stop. For example, using a 1.4x teleconverter with a 300 mm lens will effectively increase the focal length to 420mm. A lens set to f/2.8 will now be f/4. ...

The Sigma 2x EX APO Tele Converter (also known as a tele-extender) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. ...

The Sigma 15mm f/2.8 EX DG Diagonal Fisheye is a full-frame fisheye auto focus lens that fills the entire 35mm negative with a full 180° diagonal field of view. This unique lens enables you to create a variety of unusual compositions even when shooting ordinary subjects. The improved DG lens coating reduces flare and ghosting, which is a common problem of digital cameras, and also creates an optimum color balance. ...

This 20mm is a Super wide-angle lens with a large aperture of f/1.8 and angle of view 94.5°. It has Macro focusing capability with a minimum focusing distance of just 7.9", for a reproduction ratio of 1:4. The 9-bladed iris diaphragm obtains beautiful out of focus image characteristics. Aspherical lens elements in the front & rear lens groups minimize distortion, spherical aberration and astigmatisms. ...

This 24mm lens has a fast f/1.8 maximum aperture with macro focusing capability (minimum focusing distance is 7.1" for a reproduction ratio of 1:2.7). The 9-bladed aperture diaphragm obtains beautiful, circular out of focus characteristics. It incorporates a floating focus system and uses two aspherical elements for minimized distortion, spherical aberration and astigmatism. ...

This 28mm lens has a fast f/1.8 maximum aperture, with macro-focusing capability. It features minimum focusing, down to 7.9" with a reproduction ratio of 1:2.9). The 9-bladed aperture diaphragm obtains beautiful out of focus images. It incorporates the floating focus system and the use of two aspherical lens elements to minimize distortion, spherical aberration and astigmatism. ...

The Sigma 50mm f/1.4 EX DG HSM Autofocus Lens is a standard lens that provides a large maximum aperture of f/1.4. It is the ideal prime lens for use with all Nikon digital or film SLR cameras. When used on Nikon digital SLR cameras with the APS-C size sensor, the equivalent focal length of this lens will be 75mm, which makes it an excellent choice as a bright short telephoto lens....

To maintain high optical performance from infinity to close-up 1:1 macro photos without accessories, the Sigma 50mm f/2.8 EX DG incorporates a "Floating Internal Focusing" (FIF) system. As a result, the lens also features a non-rotating front lens group which makes it easier to work with polarizing filters, and has a focus limiter to narrow down the broad focus range. ...

The Sigma Macro 70mm f/2.8 EX DG Lens is a medium telephoto macro lens which is ideal for both digital and 35mm film SLR cameras. The 70mm focal length gives an equivalent field of view to the popular 105mm macro lens when used on digital SLR cameras with an APS-C size image sensor. The design of this lens makes it suitable for taking pictures in all situations, from infinity to 1:1 macro, both with natural light conditions or flash. ...